Photoelectric cell with stabilised amplification
US5994689A · kind A · utility
74Cited by
3References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 3, 1997 |
| Grant date | Nov 30, 1999 |
| Priority date | — |
| Expiry date | Dec 3, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K17/7955
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A photoelectric cell having a receiving section fitted with an amplifier processing circuit for making the cell immune to electrical disturbances. The processing circuit uses a transfer impedance amplifier A having a gain loop 24 which is shunted by a short-circuit path 24A including a switch T1 controlled by the transmission signal E1. The switch T1 conducts when no pulses are delivered from the transmission signal E1 and does not conduct when pulses are received from the transmission signal E1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.